# Checking the Application

Check the application in SIMATIC Manager as follows to make sure it writes data to the PLC properly:

1. Place the vision system online. Set a new value in the web page, then click the Write To PLC button created in Updating the Job in the Adapter.

2. Open SIMATIC Manager, and check the monitored variables. The Results Completed Cam0 bit must be inverted each time new data is sent from the vision system to the PLC. At the same time, the Results Valid Cam0 bit must be set to true, indicating new data. The data can be seen in the Results row, in hexadecimal format by default.

3. Give a rising edge to the Results Ack Cam0 bit to reset the Results Valid Cam0 bit to false. To do so, first set the Results Ack Cam0 bit to true, and then to false. Make sure to click the Activate modify values icon each time the value is modified.